Orbital calibration of the late Campanian carbon isotope event in the North Sea Anastasios Perdiou Nicolas Thibault Kresten Anderskouv Frans van Buchem Govert Joan Arie Buijs Christian J. Bjerrum 10.6084/m9.figshare.2009979.v1 https://geolsoc.figshare.com/articles/journal_contribution/Orbital_calibration_of_the_late_Campanian_carbon_isotope_event_in_the_North_Sea/2009979 XRF calibration 2015-12-15 11:58:01 Orbital calibration Campanian carbon isotope event SeaXRF Geology